./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7581eca761af2e68d92eb1cb64032fd3321be3eb54b53aabe807351a9f77b1d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:04:32,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:04:32,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:04:32,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:04:32,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:04:32,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:04:32,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:04:32,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:04:32,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:04:32,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:04:32,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:04:32,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:04:32,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:04:32,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:04:32,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:04:33,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:04:33,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:04:33,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:04:33,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:04:33,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:04:33,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:04:33,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:04:33,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:04:33,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:04:33,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:04:33,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:04:33,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:04:33,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:04:33,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:04:33,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:04:33,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:04:33,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:04:33,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:04:33,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:04:33,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:04:33,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:04:33,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:04:33,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:04:33,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:04:33,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:04:33,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:04:33,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:04:33,122 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:04:33,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:04:33,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:04:33,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:04:33,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:04:33,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:04:33,134 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:04:33,134 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:04:33,135 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:04:33,135 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:04:33,136 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:04:33,137 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:04:33,137 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:04:33,137 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:04:33,138 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:04:33,138 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:04:33,138 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:04:33,139 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:04:33,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:04:33,140 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:04:33,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:04:33,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:04:33,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:04:33,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:04:33,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:04:33,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:04:33,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:04:33,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:04:33,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:04:33,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:04:33,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:04:33,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:04:33,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:04:33,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:04:33,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:04:33,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:04:33,148 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:04:33,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:04:33,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:04:33,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:04:33,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:04:33,149 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7581eca761af2e68d92eb1cb64032fd3321be3eb54b53aabe807351a9f77b1d [2021-11-23 17:04:33,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:04:33,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:04:33,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:04:33,589 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:04:33,590 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:04:33,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c [2021-11-23 17:04:33,699 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/data/f0bd19035/6ac60b38e7b542ca81925da6355cf6ed/FLAG18aa5d5ca [2021-11-23 17:04:34,382 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:04:34,383 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c [2021-11-23 17:04:34,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/data/f0bd19035/6ac60b38e7b542ca81925da6355cf6ed/FLAG18aa5d5ca [2021-11-23 17:04:34,680 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/data/f0bd19035/6ac60b38e7b542ca81925da6355cf6ed [2021-11-23 17:04:34,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:04:34,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:04:34,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:04:34,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:04:34,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:04:34,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:04:34" (1/1) ... [2021-11-23 17:04:34,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d738c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:34, skipping insertion in model container [2021-11-23 17:04:34,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:04:34" (1/1) ... [2021-11-23 17:04:34,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:04:34,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:04:35,003 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c[914,927] [2021-11-23 17:04:35,063 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c[7115,7128] [2021-11-23 17:04:35,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:04:35,118 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:04:35,134 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c[914,927] [2021-11-23 17:04:35,161 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c[7115,7128] [2021-11-23 17:04:35,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:04:35,224 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:04:35,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:35 WrapperNode [2021-11-23 17:04:35,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:04:35,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:04:35,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:04:35,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:04:35,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:35" (1/1) ... [2021-11-23 17:04:35,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:35" (1/1) ... [2021-11-23 17:04:35,319 INFO L137 Inliner]: procedures = 55, calls = 61, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 407 [2021-11-23 17:04:35,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:04:35,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:04:35,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:04:35,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:04:35,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:35" (1/1) ... [2021-11-23 17:04:35,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:35" (1/1) ... [2021-11-23 17:04:35,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:35" (1/1) ... [2021-11-23 17:04:35,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:35" (1/1) ... [2021-11-23 17:04:35,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:35" (1/1) ... [2021-11-23 17:04:35,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:35" (1/1) ... [2021-11-23 17:04:35,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:35" (1/1) ... [2021-11-23 17:04:35,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:04:35,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:04:35,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:04:35,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:04:35,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:35" (1/1) ... [2021-11-23 17:04:35,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:04:35,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:04:35,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:04:35,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:04:35,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:04:35,486 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:04:35,486 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:04:35,487 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 17:04:35,487 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 17:04:35,487 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:04:35,487 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:04:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:04:35,488 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:04:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 17:04:35,488 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 17:04:35,489 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:04:35,489 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:04:35,489 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:04:35,489 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:04:35,489 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 17:04:35,490 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 17:04:35,490 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 17:04:35,490 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 17:04:35,490 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 17:04:35,491 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 17:04:35,491 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:04:35,491 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:04:35,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:04:35,492 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:04:35,492 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:04:35,493 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 17:04:35,493 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 17:04:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:04:35,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:04:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:04:35,496 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:04:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-11-23 17:04:35,497 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-11-23 17:04:35,596 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:04:35,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:04:36,308 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:04:36,343 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:04:36,349 INFO L158 Benchmark]: Toolchain (without parser) took 1660.22ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 68.8MB in the beginning and 105.8MB in the end (delta: -37.0MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2021-11-23 17:04:36,355 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 102.8MB. Free memory was 58.2MB in the beginning and 58.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:04:36,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.98ms. Allocated memory is still 102.8MB. Free memory was 68.6MB in the beginning and 72.4MB in the end (delta: -3.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:04:36,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.34ms. Allocated memory is still 102.8MB. Free memory was 72.4MB in the beginning and 69.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:04:36,358 INFO L158 Benchmark]: Boogie Preprocessor took 48.17ms. Allocated memory is still 102.8MB. Free memory was 69.8MB in the beginning and 67.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:04:36,359 INFO L158 Benchmark]: RCFGBuilder took 975.05ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 67.4MB in the beginning and 105.8MB in the end (delta: -38.4MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2021-11-23 17:04:36,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 102.8MB. Free memory was 58.2MB in the beginning and 58.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.98ms. Allocated memory is still 102.8MB. Free memory was 68.6MB in the beginning and 72.4MB in the end (delta: -3.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.34ms. Allocated memory is still 102.8MB. Free memory was 72.4MB in the beginning and 69.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.17ms. Allocated memory is still 102.8MB. Free memory was 69.8MB in the beginning and 67.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 975.05ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 67.4MB in the beginning and 105.8MB in the end (delta: -38.4MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:04:36,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7581eca761af2e68d92eb1cb64032fd3321be3eb54b53aabe807351a9f77b1d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:04:39,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:04:39,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:04:39,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:04:39,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:04:39,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:04:39,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:04:39,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:04:39,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:04:39,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:04:39,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:04:39,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:04:39,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:04:39,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:04:39,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:04:39,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:04:39,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:04:39,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:04:39,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:04:39,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:04:39,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:04:39,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:04:39,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:04:39,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:04:39,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:04:39,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:04:39,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:04:39,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:04:39,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:04:39,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:04:39,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:04:39,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:04:39,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:04:39,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:04:39,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:04:39,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:04:39,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:04:39,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:04:39,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:04:39,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:04:39,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:04:39,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:04:39,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:04:39,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:04:39,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:04:39,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:04:39,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:04:39,463 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:04:39,464 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:04:39,464 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:04:39,464 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:04:39,464 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:04:39,465 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:04:39,465 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:04:39,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:04:39,467 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:04:39,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:04:39,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:04:39,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:04:39,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:04:39,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:04:39,468 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:04:39,469 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:04:39,469 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:04:39,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:04:39,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:04:39,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:04:39,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:04:39,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:04:39,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:04:39,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:04:39,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:04:39,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:04:39,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:04:39,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:04:39,473 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:04:39,473 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:04:39,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:04:39,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:04:39,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:04:39,474 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7581eca761af2e68d92eb1cb64032fd3321be3eb54b53aabe807351a9f77b1d [2021-11-23 17:04:39,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:04:39,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:04:39,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:04:39,976 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:04:39,978 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:04:39,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c [2021-11-23 17:04:40,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/data/88f869aec/d2f169aa4bb348819e3c6e4811d13ad1/FLAGca4008c9c [2021-11-23 17:04:40,851 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:04:40,852 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c [2021-11-23 17:04:40,867 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/data/88f869aec/d2f169aa4bb348819e3c6e4811d13ad1/FLAGca4008c9c [2021-11-23 17:04:41,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/data/88f869aec/d2f169aa4bb348819e3c6e4811d13ad1 [2021-11-23 17:04:41,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:04:41,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:04:41,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:04:41,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:04:41,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:04:41,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:04:41" (1/1) ... [2021-11-23 17:04:41,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482f7cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41, skipping insertion in model container [2021-11-23 17:04:41,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:04:41" (1/1) ... [2021-11-23 17:04:41,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:04:41,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:04:41,423 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c[914,927] [2021-11-23 17:04:41,552 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c[7115,7128] [2021-11-23 17:04:41,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:04:41,612 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:04:41,628 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c[914,927] [2021-11-23 17:04:41,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.01.cil-2.c[7115,7128] [2021-11-23 17:04:41,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:04:41,713 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:04:41,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41 WrapperNode [2021-11-23 17:04:41,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:04:41,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:04:41,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:04:41,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:04:41,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41" (1/1) ... [2021-11-23 17:04:41,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41" (1/1) ... [2021-11-23 17:04:41,817 INFO L137 Inliner]: procedures = 56, calls = 61, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 389 [2021-11-23 17:04:41,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:04:41,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:04:41,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:04:41,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:04:41,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41" (1/1) ... [2021-11-23 17:04:41,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41" (1/1) ... [2021-11-23 17:04:41,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41" (1/1) ... [2021-11-23 17:04:41,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41" (1/1) ... [2021-11-23 17:04:41,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41" (1/1) ... [2021-11-23 17:04:41,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41" (1/1) ... [2021-11-23 17:04:41,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41" (1/1) ... [2021-11-23 17:04:41,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:04:41,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:04:41,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:04:41,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:04:41,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41" (1/1) ... [2021-11-23 17:04:41,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:04:41,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:04:41,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:04:41,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:04:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:04:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:04:42,012 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:04:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 17:04:42,018 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 17:04:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:04:42,019 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:04:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:04:42,019 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:04:42,020 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 17:04:42,020 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 17:04:42,020 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:04:42,020 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:04:42,020 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:04:42,021 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:04:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 17:04:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 17:04:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:04:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 17:04:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 17:04:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 17:04:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 17:04:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:04:42,023 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:04:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:04:42,023 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:04:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 17:04:42,024 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 17:04:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:04:42,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:04:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:04:42,025 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:04:42,025 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-11-23 17:04:42,025 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-11-23 17:04:42,155 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:04:42,158 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:04:42,934 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:04:42,947 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:04:42,950 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-23 17:04:42,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:04:42 BoogieIcfgContainer [2021-11-23 17:04:42,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:04:42,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:04:42,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:04:42,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:04:42,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:04:41" (1/3) ... [2021-11-23 17:04:42,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a12ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:04:42, skipping insertion in model container [2021-11-23 17:04:42,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:41" (2/3) ... [2021-11-23 17:04:42,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a12ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:04:42, skipping insertion in model container [2021-11-23 17:04:42,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:04:42" (3/3) ... [2021-11-23 17:04:42,963 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.01.cil-2.c [2021-11-23 17:04:42,971 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:04:42,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:04:43,049 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:04:43,056 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 17:04:43,056 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:04:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 167 states have (on average 1.5449101796407185) internal successors, (258), 175 states have internal predecessors, (258), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-23 17:04:43,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 17:04:43,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:04:43,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:04:43,118 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:04:43,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:04:43,124 INFO L85 PathProgramCache]: Analyzing trace with hash 243262796, now seen corresponding path program 1 times [2021-11-23 17:04:43,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:04:43,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808038263] [2021-11-23 17:04:43,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:04:43,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:04:43,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:04:43,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:04:43,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:04:43,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 17:04:43,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:04:43,416 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:04:43,421 INFO L158 Benchmark]: Toolchain (without parser) took 2270.88ms. Allocated memory is still 75.5MB. Free memory was 53.4MB in the beginning and 54.1MB in the end (delta: -612.4kB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2021-11-23 17:04:43,421 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 54.5MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:04:43,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.08ms. Allocated memory is still 75.5MB. Free memory was 53.3MB in the beginning and 53.0MB in the end (delta: 280.3kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 17:04:43,423 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.05ms. Allocated memory is still 75.5MB. Free memory was 53.0MB in the beginning and 50.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:04:43,423 INFO L158 Benchmark]: Boogie Preprocessor took 89.40ms. Allocated memory is still 75.5MB. Free memory was 50.1MB in the beginning and 47.8MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:04:43,424 INFO L158 Benchmark]: RCFGBuilder took 1044.83ms. Allocated memory is still 75.5MB. Free memory was 47.8MB in the beginning and 43.4MB in the end (delta: 4.4MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2021-11-23 17:04:43,425 INFO L158 Benchmark]: TraceAbstraction took 462.93ms. Allocated memory is still 75.5MB. Free memory was 42.9MB in the beginning and 54.1MB in the end (delta: -11.1MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-11-23 17:04:43,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 54.5MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.08ms. Allocated memory is still 75.5MB. Free memory was 53.3MB in the beginning and 53.0MB in the end (delta: 280.3kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.05ms. Allocated memory is still 75.5MB. Free memory was 53.0MB in the beginning and 50.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.40ms. Allocated memory is still 75.5MB. Free memory was 50.1MB in the beginning and 47.8MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1044.83ms. Allocated memory is still 75.5MB. Free memory was 47.8MB in the beginning and 43.4MB in the end (delta: 4.4MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * TraceAbstraction took 462.93ms. Allocated memory is still 75.5MB. Free memory was 42.9MB in the beginning and 54.1MB in the end (delta: -11.1MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:04:43,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d331c-ca4d-412a-8e8c-fa3a0f90c07a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable